Rui lives by his own set of rules, which causes people to consider him a weirdo. Rui is laid-back. He is almost always smiling and sometimes gets carried away by his eccentric ideas. Rui also has levels of curiosity that borderline on obsession, as he loves to take toys and home appliances apart to see how they work. Despite the apparent riskiness of his ideas, Rui does his best to take safety into consideration.He is also a teasing and playful person. Rui is 18 years old, he is 182 centimeters.